CN202527685U

CN202527685U - Improved structure of mould for producing zinc alloy casting

Info

Publication number: CN202527685U
Application number: CN2011205719840U
Authority: CN
Inventors: 林补生; 阙福文
Original assignee: HUIHUANG PLUMBING GROUP CO Ltd
Current assignee: HUIHUANG PLUMBING GROUP CO Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-11-14
Anticipated expiration: 2021-12-30

Abstract

The utility model discloses an improved structure of a mould for producing a zinc alloy casting. The improved structure of the mould for producing the zinc alloy casting comprises an upper mould, a lower mould, and a runner flowing into cavities of the upper and lower moulds. The runner is a hot runner like an ice cream barrel. An overflow well is at least arranged on the cavity of the lower mould far from the runner. According to the improved structure of the mould for producing the zinc alloy casting disclosed by the utility model, the hot runner like the ice cream barrel is adopted, thereby, not only the flow resistance of a zinc alloy solution is small and cold shut is not generated, but also the meltback amount of the runner and a sprue can be reduced to a greater extent, and the casting cost is lowered so that the meltdown amount of the runner is reduced by more than 20%. The overflow well ensures that enough exhaust space is available in the pouring process, and the casting is intact and non-defective so that the yield of the zinc alloy casting is raised from 90% to 99%. As the meltback amount of the runner and the sprue is greatly reduced, the melting loss of the zinc alloy and the environmental pollution caused by recycling oxides are reduced. Therefore, according to the improved structure of the mould for producing the zinc alloy casting provided by the utility model, not only the competitiveness of the casting is improved, but also remarkable social benefits can be brought.

Description

Produce the improvement structure of Zinc alloy casting mould

Technical field

The utility model relates to a kind of mould, particularly relates to a kind of improvement structure of producing the Zinc alloy casting mould.

Background technology

The zinc alloy diecasting mould is one of principal element that influences the zinc alloy diecasting quality; Existing zinc alloy diecasting mould adopts trapezoidal runner design; This runner not only can produce eddy current and cold shut in press casting procedure; Cause cast(ing) surface to produce cold line or rough surface, and percent defective is high, has had a strong impact on the quality of foundry goods; Produce cast gate, runner and the big problem of waste product melt back amount simultaneously, not only cost rises, and can increase aluminium, magnesium turns over the oxidational losses in the molten process.

The utility model content

In view of this, the purpose of the utility model is to provide a kind of improvement structure that can improve the production Zinc alloy casting mould of finished casting rate and quality.

In order to reach above-mentioned purpose, the solution of the utility model is:

A kind of improvement structure of producing the Zinc alloy casting mould; The interior runner of die cavity that comprises upper die and lower die and flow into upper die and lower die; Said runner is the hot flow path of tubbiness, and the cross section of this runner is circular from large to small by becoming, and is provided with an overflow well at the die cavity of counterdie at least away from the runner place.

Said overflow well is two or three.

After adopting said structure, the improvement structure of the production Zinc alloy casting mould of the utility model has following beneficial effect: the cross section of adopting hot flow path and runner promptly is the ice cream tubbiness from large to small for circular pursuing becomes; Like this; Can not only make the zinc alloy solution flow resistance little, can not produce cold shut, and can reduce runner, cast gate melt back amount than limits; Reduce casting cost, the runner amount of melting down has been reduced more than 20%; Die cavity at counterdie is provided with an overflow well at least away from the runner place, can guarantee that casting cycle has enough exhaust spaces, guarantees that foundry goods is perfect sunken, and the yield rate of zinc alloy diecasting is brought up to more than 99% by 90%; Owing to significantly reduce runner and the waste product amount of melting down, reduce the environmental pollution that the recovery of kirsite loss in smelting and oxide causes, so the utility model not only can improve the competitiveness of foundry goods, can also bring remarkable social benefit.

Description of drawings

Fig. 1 is the sketch map of improvement structure of the production Zinc alloy casting mould of the utility model;

Fig. 2 is the structural representation of the counterdie in the utility model;

Fig. 3 is the structural representation of the patrix in the utility model;

Fig. 4 is the cutaway view of improvement structure of the production Zinc alloy casting mould of the utility model.

Among the figure:

Patrix 1 die cavity 11

Counterdie 2 die cavities 21

Overflow well 22 runners 3

The specific embodiment

In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.

Shown in Fig. 1 to 4, the improvement structure of the production Zinc alloy casting mould of the utility model comprises patrix 1, counterdie 2 and runner 3.

Patrix 1, counterdie 2 correspondence respectively have die

cavity

11,21, and runner 3 is communicated with the die

cavity

11,21 of patrix 1, counterdie 2.During die casting, zinc alloy solution flows in the die

cavity

11,21 of patrixes 1 and counterdie 2 from runner 3, the demoulding and take out foundry goods after die casting is accomplished.

Runner 3 is the hot flow path of ice cream tubbiness, is provided with an overflow well 22 at the die cavity 21 of counterdie 2 at least away from runner 3 places; According to factors such as the formal shape of foundry goods and sizes, can adopt two or three overflow wells 22, each overflow well 22 is arranged along die cavity 21 edges of counterdie 2 respectively.

The improvement structure of the production Zinc alloy casting mould of the utility model, the cross section of adopting hot flow path and runner are circular by becoming, and promptly are the ice cream tubbiness from large to small; Like this; Can not only make the zinc alloy solution flow resistance little, can not produce cold shut, and can reduce runner, cast gate melt back amount than limits; Reduce casting cost, the runner amount of melting down has been reduced more than 20%; Die cavity 21 at counterdie 2 is provided with overflow well 22 away from runner 3 places, can guarantee that casting cycle has enough exhaust spaces, guarantees that foundry goods is perfect sunken, and the yield rate of zinc alloy diecasting is brought up to more than 99% by 90%.

Adopt the utility model can significantly reduce runner and the waste product amount of melting down, reduce kirsite loss in smelting and oxide and reclaim the environmental pollution that causes, therefore, the utility model not only can improve the competitiveness of foundry goods, can also bring remarkable social benefit.

The product form and the style of the foregoing description and accompanying drawing and non-limiting the utility model, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.

Claims

1. improvement structure of producing the Zinc alloy casting mould; The interior runner of die cavity that comprises upper die and lower die and flow into upper die and lower die; It is characterized in that: said runner is the hot flow path of tubbiness; The cross section of this runner is circular from large to small by becoming, and is provided with an overflow well at the die cavity of counterdie at least away from the runner place.

2. the improvement structure of production Zinc alloy casting mould as claimed in claim 1 is characterized in that: said overflow well is two or three.